Abstract
In modern Japan, it is now rare to see an untreated case of bilateral development dysplasia of the hip(DDH)in young children who are able to walk. Here we report a rare case of bilateral DDH in a girl aged 4 years and 9 months with a chief complaint of lumbar lordosis augmentation. No abnormality had been evident at medical examinations, and no gait abnormality had been evident after she had started to walk. She was examined at an orthopedic clinic because of lumbago at the age of 4, but was followed up without any notable abnormality after simple lumbar radiography. She was examined at our hospital because of marked lumbar lordosis at the age of 4 years and 9 months. By this time she had developed a staggering gait, and bilateral DDH was noted on a plain radiograph. Open surgical reduction was performed. An intraoperative stabilization test was performed, and we decided not to add osteotomy and used an extensive anterolateral approach alone.
